Correlation and Its Changing Characteristics in the Main Belt and Road Countries of Life Expectancy and GDP Per Capita from 1990 to 2020

Abstract

Previous studies on the correlation between life expectancy and GDP per capita showed some variation. This study describes the trends of life expectancy and GDP per capita in 13 main countries along the Belt and Road from 1990 to 2020, and analyzes the relationship between male life expectancy, female life expectancy, or total life expectancy and GDP per capita in these countries using linear regression models. The results show that life expectancy and GDP per capita both increase gradually with increasing years. There is an immediate correlation between life expectancy and GDP per capita, and male life expectancy, female life expectancy, and total life expectancy are positively correlated with GDP per capita. This study confirms the positive correlation between life expectancy and GDP per capita, and these results will be the starting point for the public to pay attention to the health status of people in the Belt and Road countries.